Notice of Proposed Sale · 144

Butterfly Network, Inc.

BFLYNYSEEQUITYCurrent

Notice of Proposed Sale

Filed Jul 16, 2026Accepted Jul 16, 2026, 5:43 PM EDTFiling CIK 1076352Accession 0001974158-26-000083

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Structured filing — 144

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer: Butterfly Network, Inc.
Issuer CIK: 0001804176
SEC file number: 001-39292
Phone: 781-557-4800
Person for whose account securities are to be sold: ROTHBERG JONATHAN M
Relationships to issuer: Director
Street: 530 Old Whitefield St
City: Guilford
State / country code: CT
Postal code: 06437

Securities proposed for sale

Securities proposed for sale · 1 reported row
Security	Proposed units	Aggregate market value	Units outstanding	Approximate sale date	Exchange	Broker / market maker
Class A common	1,467,501	10,400,000.00	235,200,000	07/16/2026	NYSE	Jefferies LLC

Broker / market maker — proposed row 1, entry 1

Name: Jefferies LLC
Street: 520 Madison Ave
City: New York
State / country code: NY
Postal code: 10022

Acquisition of securities to be sold

Acquisition of securities to be sold · 4 reported rows
Security	Acquired	Nature of acquisition	Acquired from	Amount acquired	Gift transaction	Payment date	Nature of payment
Class A	12/31/2022	RSU	N/A	58,000	N	12/31/2022	N/A
Class A	06/15/2023	RSU	N/A	37,973	N	06/15/2023	N/A
Class A	06/12/2025	RSU	N/A	157,894	N	06/12/2025	N/A
Class A	05/31/2012	Private Placement	N/A	1,213,634	N	05/31/2012	N/A

Sales reported in the preceding three months

Sales reported in the preceding three months · 2 reported rows
Seller	Security	Sale date	Amount sold	Gross proceeds
Dr. Jonathan Rothberg	Class A	07/14/2026	815,632	6,295,000.00
Dr. Jonathan Rothberg	Class A	07/15/2026	1,730,319	12,670,000.00

Seller — prior-sale row 1, entry 1

Name: Dr. Jonathan Rothberg
Street: 530 Old Whitefield St
City: Guilford
State / country code: CT
Postal code: 06437

Seller — prior-sale row 2, entry 1

Name: Dr. Jonathan Rothberg
Street: 530 Old Whitefield St
City: Guilford
State / country code: CT
Postal code: 06437

Prior-sale reporting

Nothing to report for the preceding three months: N

Notice signature

Notice date: 07/16/2026
Signed: Jonathan Rothberg
Plan adoption dates: 03/13/2026

Company context

Current securities

BFLYNYSE · EQUITY · Current

Historical securities (4)

BFLYWOTC · WARRANT · Historical · closed Feb 12, 2026 BFLY.WSNYSE · WARRANT · Historical · closed Jan 13, 2026 LGVWNYSE · EQUITY · Historical · closed Feb 15, 2021 LGVW.WSNYSE · WARRANT · Historical · closed Feb 16, 2021

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